pls answer the question

How much would you have to invest today to receive: Use ARpendix B and Anpendix D. (Round "PV Foctor" to 3 decimol places. Round the final answers to the nearest whole dollar.) a. $16,000 in 6 years at 10 percent? Present value b. $20,500 in 17 years at 12 percent? Present value c. $8.500 each year for 17 years at 8 percent? Presentvalue $ d. $8.500 each year, at the beginning, for 12 years at 7 percent? Present value e. $68,000 each year for 50 years at 8 percent? Present value f. $68,000 each year for 51 years, at the begining, at 8 percent? Present value